Alcatel-Lucent 7705 - Notes on 7705 SAR-8 and 7705 SAR-F

Services Overview
7705 SAR OS Services Guide Page 59
Failure Detection
Failure of the GRE SDP or the IP network it rides over can be detected by OAM tools as
well as by BFD. With SAA, OAM tools can be configured to run periodically in order to
facilitate faster failure detection. If a failure occurs, the ATM SAPs must be rerouted by the
5620 SAM to the ATM ports used for backhauling the traffic. The mission-critical traffic is
still serviced before the best-effort HSDPA traffic.
For information on OAM and SAA tools, refer to the 7705 SAR OS OAM and Diagnostics
Guide. For information on BFD, refer to the 7705 SAR OS Router Configuration Guide.